demand from growing countries like china and india? sophisticated financial speculators exploiting small changes in markets to make money? ali, the government now wants to rein in on excessive speculation in these important markets. >> the commodity futures trading commission which regulates the oil industry held hearings this week about speculation in the energy markets and to see whether new restrictions would need to be created. speculative traders have been blamed by some critics, as you said, christine, for causing the record runup in oil prices last summer. but it's important to realize that speculating, the "s" word is not necessarily a bad word. in fact, it happens all the time. you probably speculated whether you know it or not. let me show you a little about this. let's get that out of here, the "s" word. you want to buy a house. you are buying a house on the hope that it's going to go up in value. you are also going to live in that house. so it's a purchase. you're getting some use of that house. but you're speculating when